update readme

README.md

+# CityGML Viewer
 
+[Go to pubilshed viewer](https://transfer.hft-stuttgart.de/pages/citydoctor/citygml-viewer/)
 
----
+Simply load a CityGML for the viewer to show the geometry.
 
-Example plain HTML site using GitLab Pages.
+CityGML with a coordinate system not in meters will not work.
 
-Learn more about GitLab Pages at https://pages.gitlab.io and the official
-documentation https://docs.gitlab.com/ce/user/project/pages/.
+## Controls
 
----
-
-## GitLab CI
-
-This project's static Pages are built by [GitLab CI][ci], following the steps
-defined in [`.gitlab-ci.yml`](.gitlab-ci.yml):
-
-```
-variables:
-  EXPORT_DIR: "/var/www/html/pages"
-
-pages-master:
-  stage: deploy
-  script:
-    - mkdir "$EXPORT_DIR/$CI_PROJECT_NAME"	
-    - cp -r public/* "$EXPORT_DIR/$CI_PROJECT_NAME"
-  tags: 
-    - production
-  only: 
-    - master
-```
-
-The above example expects to put all your HTML files in the `public/` directory.
+- Left click + drag: Rotate the view
+- right click + drag: move the view
+- mouse wheel: zoom in or out